2. You tried a miniDV tape cleaner?
3. Notice page 3 of http://resources.jvc.com/Resources/00/00/91/LYT1658-001B-EN.pdf Yup. Ever done that?
My JVC gr-d750 mini dv camcorder had been working fine, now I tried to playback my recent recordings both viewing on the camcorder and connecting to a tv, but the audio is garbled in a few spots. I'm hoping there is a quick fix to this, as I have my son's 1st birthday in a few days. The camera is only about a year old, so I'm hoping it didn't go bad already. Oh, I also tried a new tape and recorded new video on it and the same thing happened.